hanson



(No Model.) 3 Sheets-Sheet L' 0. R. HANSON. HORSESHOB NAIL BLANK MACHINE.

Patented Mar. 30, 1897.

WITNESSES.

n: nunius PEYERS co. PHDTO-UTHO" WASHINGTON, n. o.

(No Model.) 3 Sheets-Sheet 2.

. 0. R. HANSON.

HORSBSHOB NAIL BLANK MACHINE.

No. 579,869. Patented Mar. 30, 1897 WIT/VESSfS. l/VIf/VTOH.

0. Mal/MW dz MM mm I ATTORIYEYSf (No Model.) 3 Sheets-Sheet 3.

0. R. HANSON. HORSESHOE NAIL BLANK MACHINE.

No. 579,869. Patented Mar. 30, 1897.

ATTORNEYS.

OSCAR REINHOLD HANSON, OF PEGAU, AUSTRIA-HUN GARY.

HORSESHOE-NAlL-BLANK MACHINE.

SPECIFICATION forming part of Letters Patent No. 579,869, dated March 30, 1897. Application filed October 12,1896. Serial No. 608,629. No model.) Patentedin Austria-HungaryDecember 6, 1892, No. 34,533.

To all whom, it may concern" Be it known that I,OscAR REINHOLD HAN- SON, a subject of the King of Sweden and Norway, residing at Pegau, in the Province of Styria, Austria-Hungary, have invented a certain new and useful Improvement in Horsesl1oeNail-Blank Machinery and in the Production of Horseshoe-Nail Blanks, (for which Letters Patent have been obtained, in part, in Austria-Hungary, under date of December 6, 1892, No. 34,533,) of which the following is a specification.

This invention relates to certain improvements in and connected with horseshoe-nailblank-cutting machinery of a known type and in the production of the blanks, the object being to provide an effective form of horseshoe nail blank cutting machine the purpose of which is to cut the blanks out of a flat ribbon or strip of metal having swollen sides with a very small waste of material.

The apparatus is illustrated in the accompanying drawings, in which Figure 1 is afront elevation of the machine. Fig. 2 is a side elevation. Fig. 3 is a plan of the table of the machine, a movable carriage, and connected parts. Fig. 4 is a side and front elevation, respectively, of a part, being a detail of the machine. Fig. 5 is an elevation of the bottom die, showing the metal strip. Fig. 6 is an elevation of the upper cutters and punch with the head in which same are held. Fig. 7 is an under side View of Fig. 6. Fig. 8 is an end elevation of the cutters and holdin g-head, showing the bottom die and metal strip thereon. Fig. 9 is a side and end elevation, respectively, of the punch. Fig. 10 is a face view and side elevation, respectively, of the cutter for producing a short blank. Fig. 11 is a face view and side elevation, respectively, of the cutter for producing a long blank. Fig. 12 is a section and plan, respectively, on a larger scale, of one form of metal strip. having the outlines of some of the blanks marked thereon to illustrate the way in which they are cut. Fig. 13 is a plan, and Fig. 13 is a side elevation, of a short blank. Fig. l4c is a plan, and Fig. l t a side elevation, respectively, of a long blank. Fig. 15 is a plan, and Fig. 15 a side elevation, of the waste piece left in cutting the blanks illustrated from the strip. Fig. 16 is a plan, and Fig. 16 is a side elevation, of the finished nail produced from the blank shown in Fig. 13. Fig. 17 is a plan of the waste piece produced in making the finished nail shown the blank shown in Fig. 14.

A is a casting in the shape of a table; B, a frame secured thereto and carrying upon a shaft 0 a friction pulley and clutch D, of some convenient form, and having an operating lever E. An eccentric F is secured upon shaft 0 and is provided with a handled screw F to adjust the strap F of same. This eccentric has a nose F on its strap, which acts in a slot in a slide G, which reciprocates between guides H. Such slide G carries the tool-holder Q, in which are held the cutters L L and a punch L which operate in connection with a die M carried by the table A. The die M is held in position tightly by a block N and screws N, Fig. 1.

The metal strip X is introduced into the machine between two vertical rollers 0, carried by a bracket'O on a movable carriage P and inserted between the die M and the cutters L L, the cutting being effected by the pressure of the tool-holder carrying the cutters as it is forced down by the nose F of the eccentric F.

The carriage P has ears R, on which is pivoted at R a jaw R, having an extension or arm S, to which is attached four coil-springs T, attached to the upper part of a frame U, secured to the carriage P. The shaft 0 is provided with a spur-wheel V, which gears with a spur-wheel V upon a counter-shaft O, which is suit-ably supported. An eccentric W, also upon shaft 0, bears upon a roller WV, mounted in the forked end of a rod Y,

which is guided by an eye Y, secured to the frame B. A coil-spring Z is attached to an arm Z, secured to the eye Y, and to a spring Z secured to one end of a lever a, pivoted to the frame A at a. The other end of the lever a carries an arm 1), Figs. 1, 2, and 4, pivoted thereto, such arm having a roller 1) on a fixed arm thereof and a roller 12 on an arm which is pivoted to the main arm I) at Z2 as shown. The arm I), with its rollers, passes into a recess formed by a lug c of the carriage P and a lug d of the table A.

The slide G carries an arm 0, bolted to it, said arm carrying at its end in an adjustable fork fa roller f, which bears upon the arm S of jaw R. Two coil-springs g, attached to a yoke g, bolted to the table A at one end and to the lug c of the carriage P at the other, draw the carriage backward when the arm I; and its connected parts, which act as a wedge, leave the recess or space between the lug 0* and lug (Z.

The carriage P has a projection 7t and table A, two projections 7L 7L2, Figs. 1 and 3, with adj ustin g-screws l Z whose purpose is to limit the travel of carriage P. A plate-spring Z is fixed to the side of the table A and presses against a rod Z suitably guided, the end Z" of the rod pressing against the side of the strip X, which is thus forced against the ends of bars Z i adjustable by bolts 1, working in slots thereof, the object of the arrangement being to enable the strip X to be suitably guided and held in position.

The strip X is held by the jaw R, and at each revolution of shaft 0 the arm I) is raised through lever a, rod Y, roller V, eccentric \V, and spur-wheels V V, and rapidly enters the recess or space described and forces the earriage P forward for a limited distance, whereupon the tool-holder Q comes down and two blanks are cut by the cutters, hereinafter described, until the forward movement of the arm S causes roller f to come in contact with it, thus depressing it and opening the jaw R and raising the slide G with the tool-holder, after which as the arm I) retreats from the recess the springs g draw the carriage backward. The arm S, roller f, arm a, and slide G are raised by the springs T, which when the arm S has moved suliiciently to the left are able to close the jaw R again upon the strip, which is again forced forward with the carriage.

A strong compressed-air draft is preferably employed to blow away from the cutters and dies the waste pieces of iron produced in the cutting of the blanks. Such blanks fall through a recess in the dies and under the frame, while the waste pieces are collected in a suitable receptacle.

The cutters, dies, and punch are shown in Figs. 5 to 11. Theyconsist of a short cutter-L,

adapted to cut a blank, as in Figs. 13 and 13, a cutter L, adapted to cut a long blank, as in Figs. 14 and 14, and a compressing-punch L The three tools are held in the frame Q by a screw m, which passes through a block Q, and abuts against a block 77?, shaped to the contour of the side of the cutter L, a shaped block a being interposed between this and the cutter L and a shaped block a being on the farther side of cutter L, the whole being pressed against a block 1), so that they are held firmly in the holder Q. The punch L is held in the block a by means of a screw 0'.

The die M may be of the ordinary construction and has recesses or openings correspond ing to the two cutters above. The punch L is intermediate of the cutters, so that when a short nail-blank is being cut the point of the next or long nail-blank or portion of the bar which is to become a nail-blank is compressed and squeezed by the punch L and the blank is subsequently produced and separated by the cutter L, the squeezing operation takin place on the swelled portion h on the strip X, where such portion is used for the point end of the blank, so that the mateterial there is flattened somewhat and is placed more in a condition to be drawn to a long tapered point.

The die M may have a groove t to receive the strip, as shown in Figs. 5 and S. The knife L, adapted for cutting the short blank, Figs. 13 and 13*,is shown i n Fig. 10. The knife L (shown in Fig. 11) is adapted to cut the nail shown in Figs. 14 and 145. It is provided at the point end with a recess or groove '16 for the reception of the point of the blank, which, after being slightly flattened by the punch when brought under the cutter, has a thickening at the extreme end, which it is desirable should not be entirely crushed by the pressure of the cutter, such groove also preventing the nail from moving sidewise during the cutting.

The cutters might both be in the shape of the blank shown in Fig. 13 or both in that shown in Fig. 14-, according to the shape of the metal strip.

The cutters have a slight inclination on the cutting edge, as shown by the lines L r, Figs. 10 and 11. The punch L also hasa recess to for the reception of the thickening at the extreme end of the blank, which it pro duces when it squeezes the swelled portion 7b to slightly flatten it.

The metal strip X, as shown in Fig. 12, has the swelling h, adapted to form the head of a short nail-blank, and also the point of a longer nail-blank, (in which case it is marked 7d,) the head of which is formed by the swelling 71?. These swelled portions may be the same on both sides of the strip or of different shapes, but one swelled portion, even if of the same shape as the other, must be of smaller dimensions on the side which is to form the thickened portion 7L for the point.

In Fig. 12 it will be seen that the short blank is cut across the strip from one swelled edge to about the base of the opposite swelled edge to produce a short nail, while the other blank is cut across the full width of the strip.-

The waste piece of metal between the two nail-blanks, as shown 'by the cross-hatching in Fig. 12, is somewhat exaggerated in size, as in Figs. 15 and 15, the latter representing the piece as distorted by the stamping of the blanks.

By producing a stretched end to the longer nail from the swelled portion h by the process described of flattening such part h prior to cutting the blank a considerable saving of material is effected and a narrower metal strip may be used. Figs. 17 and 18 show the small piece of waste, as stated, which is all that is produced in the subsequent processes of pointing and completing the nails from the blanks.

As the strip is fed into the guide-grooves t of the die M and the tool-holder Q moved downward a nail-blank is cut each by cutters L and L, the latter cutting a blank with a pressed or squeezed point, which has just been produced by the punch L Vhat I claim is 1. In a horseshoe-nail-cuttin g machine, the combination with a supporting-table and supporting-framework attached thereto, of guides attached to said frame, a slide G adapted to reciprocate between said guides, means for imparting said motion tosaid slide, tool-holder Q mounted on said slide, cutters L and L carried by said holder, blocks shaped to conform to the contour of said cutters carried by said holder for securing the said tools in position, a punch carried between the said cutters, a die carried by the said table below the said cutting-tools, a movable carriage on said table, a pivoted jaw carried by said carriage for holding the material to be out, adjustingscrews for limiting the travel of said carriage, adjustable guide-bars for holding said material in position, a spring attached to the side V of said carriage, a guide-rod abutting against the side of said material under the pressure of said spring for holding in position the said material, a curved arm attached to the said jaw, springs attached to the'free end of said arm, a roller adapted to engage the said arm to open the said jaw, an arm attached to the said slide for supporting said roller independent of said carriage, and means for forcing the said carriage forward to feed the material to be cut, substantially as described.

2. In a horseshoe-nail-cutting machine, the combination with a movable carriage P, a lug 0 attached to said carriage, the table A and a fixed lug (I carried thereby, springs attached to the table and to the lug of the carriage, an arm Z) and rollers carried at one end of the same, a pivoted lever a attached at one end to said arm, a Vertical rod Y bifurcated at one end and attached to said pivoted lever a at the other end, a roller carried in said bifurcation, a spring attached at one end to the said table and at the other to the said rod Y near the upper portion thereof, a countershaft, an eccentric mounted thereon and adapted to engage the roller carried by the vertical arm Y, a gear-Wheel mounted on said counter-shaft, a second gear engaging the first, a shaft carrying said second gear and a pulley mounted on the said shaft, substantially as described.

3. In a horseshoe-blank-cutting machine, the combination with a tool-holder Q consisting of two jaws carrying between the same end holding-blocks p and Q, a tighteningscrew passing through the block Q, cutters L and L carried by said holder, the cutter L having the recess a in one end thereof, blocks shaped to conform to the contour of said cutters carried between the aforesaid end blocks and holding the said cutters in position, a punch carried by said holder between the said cutters and having a recess u in the end thereof, a set-screw passing through one of the jaws of said holder and engaging the said punch and a die situated below the said toolholder, substantially as and for the purposes described.

In witness whereof I have hereunto signed my name in the presence of subscribing witnesses.

OSCAR REINHOLD HANSON.

WVitnesses:

GUIsEPPE M. VARVELLI, ALESSANDRO BANNWART, HUGO PYZREN. 

